Porous noise reduction device and integrated cooker

Abstract

The utility model relates to a porous noise reduction device and an integrated cooker. The porous noise reduction device is applied to a smoke collection cavity of the integrated cooker and comprises a porous noise reduction plate, the porous noise reduction plate is wing-shaped; the porous noise reduction plate is used for being arranged opposite to a smoke barrier of the integrated cooker, and the top end and the bottom end of the porous noise reduction plate are used for making contact with the upper end and the lower end of the smoke barrier correspondingly. The porous noise reduction plate comprises a porous area; the porous area is located in the middle of the porous noise reduction plate, and a plurality of through holes are distributed in the porous area; the plurality of through holes are distributed in the porous area in rows in the vertical direction and in rows in the horizontal direction, the through holes in odd rows are distributed in odd rows, and the through holes in even rows are distributed in even rows. In the embodiment of the invention, the plurality of through holes are formed in the wing-shaped porous noise reduction plate, and sound wave energy is consumed by refraction, reflection, friction and energy conversion of sound waves in the porous structure, so that the noise reduction effect is realized. Moreover, noise of a specific frequency can be selectively reduced by adjusting the size and arrangement of the plurality of through holes.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of integrated cooker, concretely is a kind of multi-hole noise reduction device and integrated cooker. BACKGROUND

[0002] In the operation process of fan in integrated cooker, due to the interaction between airflow and fan blade, shell and pipeline and other components, noise is easily generated in integrated cooker. At the same time, when airflow flows in the flow passage of integrated cooker, the turbulence caused by flow rate change and direction change will increase noise; the imbalance or non-smooth surface of the flow passage of integrated cooker head may cause vortex of airflow, and the vortex will interfere with airflow flow and generate additional noise. Therefore, it has become a technical problem to be solved in this field to design an effective noise reduction device to reduce the noise in integrated cooker. SUMMARY

[0003] In order to solve the above technical problems, the present application provides a kind of multi-hole noise reduction device and integrated cooker.

[0004] In the first aspect, the present application embodiment discloses a kind of multi-hole noise reduction device, applied to the smoke collection cavity of integrated cooker, including multi-hole noise reduction board;

[0005] The multi-hole noise reduction board is wing-shaped;The multi-hole noise reduction board is used to be opposite to the fume baffle of integrated cooker, and the top end and the bottom end of the multi-hole noise reduction board are used to be in contact with the upper end and the lower end of the fume baffle respectively;

[0006] The multi-hole noise reduction board includes multi-hole area;Multi-hole area is located at the middle position of multi-hole noise reduction board, and a plurality of through holes are distributed in multi-hole area;A plurality of through holes are distributed in column along vertical direction in multi-hole area, and are distributed in row along horizontal direction, and odd row through hole is distributed in odd column, and even row through hole is distributed in even column.

[0007] In some possible embodiments,

[0008] The ratio of the length of multi-hole area to the length of multi-hole noise reduction board is 0.15-0.3;

[0009] The width of multi-hole area is less than or equal to the width of multi-hole noise reduction board.

[0010] In some possible embodiments,

[0011] The ratio of the horizontal distance between adjacent two columns of through holes to the vertical distance between adjacent two rows of through holes is 060-0.74.

[0012] In some possible embodiments,

[0013] The cross section of through hole is rectangular;

[0014] The ratio of the length of the through hole in the horizontal direction to the length of the through hole in the vertical direction is 5-7.

[0015] In some possible embodiments,

[0016] The thickness of the porous noise reduction plate is 0.5-1 mm.

[0017] The length of the through hole in the horizontal direction is 10-14 mm.

[0018] In some possible embodiments,

[0019] The porous noise reduction plate comprises an inlet plane plate, a flow guide arc plate and a porous inclined plane plate connected in sequence.

[0020] The inlet plane plate is arranged vertically with the smoke baffle; the cross section of the flow guide arc plate is arc-shaped; the porous inclined plane plate comprises a porous region, and the porous inclined plane plate is used to contact the inner surface of the smoke baffle.

[0021] In some possible embodiments,

[0022] The porous noise reduction plate further comprises a bottom transition plate.

[0023] The bottom transition plate is connected with the porous inclined plane plate, and the bottom transition plate is used to abut against the smoke baffle.

[0024] In a second aspect, the embodiments of the present application disclose an integrated cooker, which comprises an integrated cooker head, an integrated cooker air inlet box and an integrated cooker fan box connected in sequence.

[0025] The integrated cooker head comprises a smoke inlet, a smoke collection cavity, a smoke baffle and the porous noise reduction device of any one of the above; the smoke baffle is located below the smoke inlet and outside the smoke collection cavity, and the porous noise reduction device is located in the smoke collection cavity; the porous noise reduction device and the smoke baffle are oppositely arranged.

[0026] The integrated cooker fan box comprises a smoke outlet.

[0027] In some possible embodiments,

[0028] The integrated cooker fan box comprises a box body, a fan and an air outlet cover.

[0029] The fan is located in the box body, both ends of the box body are respectively provided with a smoke outlet, and the air outlet cover is aligned with the smoke outlet at one end.

[0030] In some possible embodiments,

[0031] The top end of the porous noise reduction plate is in the same horizontal plane as the top end of the smoke baffle, and the bottom end of the porous noise reduction plate is higher than the bottom end of the smoke baffle.

[0032] The technical scheme provided by the embodiments of the present application has the following technical effects:

[0033] The porous noise reduction device of the embodiment of the present application is applied to the smoke collecting cavity of the integrated cooker, and comprises a porous noise reduction plate; the porous noise reduction plate is in the shape of a wing; the porous noise reduction plate is arranged opposite to the smoke baffle of the integrated cooker, and the top end and the bottom end of the porous noise reduction plate are arranged in contact with the upper end and the lower end of the smoke baffle respectively; the porous noise reduction plate comprises a porous region; the porous region is located at the middle position of the porous noise reduction plate, and a plurality of through holes are distributed in the porous region; the plurality of through holes are distributed in columns in the vertical direction and in rows in the horizontal direction in the porous region, and the through holes in the odd-numbered rows are distributed in the odd-numbered columns, and the through holes in the even-numbered rows are distributed in the even-numbered columns. In the embodiment of the present application, a plurality of through holes are arranged in the wing-shaped porous noise reduction plate, sound wave energy is consumed by using refraction, reflection, friction and energy conversion of sound waves in the porous structure, and the noise reduction effect is achieved. Moreover, the size and arrangement of the plurality of through holes can selectively reduce noise of specific frequencies. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, and the advantages thereof, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0035] Figure 1 is a schematic diagram of a porous noise reduction device provided by the embodiment of the present application;

[0036] Figure 2 is a schematic diagram of a head part of an integrated cooker provided by the embodiment of the present application;

[0037] Figure 3 is a schematic diagram of a cross section of a head part of an integrated cooker provided by the embodiment of the present application,

[0038] Figure 4 is a schematic diagram of a porous noise reduction device connected with a smoke baffle provided by the embodiment of the present application;

[0039] Figure 5 is a schematic diagram of a flattened porous noise reduction plate provided by the embodiment of the present application;

[0040] Figure 6 is a schematic diagram of an integrated cooker provided by the embodiment of the present application. DETAILED DESCRIPTION

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0042] It should be noted that the term "an embodiment" or "embodiment" in the specification of the embodiments of this application refers to a specific feature, structure, or characteristic that can be included in at least one implementation of this application. It should be understood that in the specification, claims, and accompanying drawings of the embodiments of this application, the terms "upper," "lower," "top," "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, in the description of this embodiment, unless otherwise stated, "a plurality of" means two or more. Additionally, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, or product that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0043] It should be understood that when a device or component is referred to as being "on," "adjacent to," or "connected to" other devices or components, it may be directly on, adjacent to, or connected to other devices or components, or there may be intervening devices or components. Conversely, when a device or component is referred to as being "directly on," "directly adjacent to," or "directly connected to" other devices or components, there are no intervening devices or components. It should be understood that although the terms first, second, third, etc., may be used to describe various components, areas, layers, and / or parts, these components, areas, layers, and / or parts should not be limited by these terms. These terms are only used to distinguish one component, area, layer, or part from another component, area, layer, or part. Therefore, without departing from the teachings of this application, the first component, area, layer, or part discussed below may be referred to as the second component, area, layer, or part. And the discussion of the second component, area, layer, or part does not imply that the first component, area, layer, or part necessarily exists in this application.

[0044] To make the objectives, technical solutions, and advantages disclosed in the embodiments of this application clearer, the embodiments of this application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the embodiments of this application and are not intended to limit the embodiments of this application.

[0045] This application provides a porous noise reduction device. This porous noise reduction device is applied to the smoke collection chamber of an integrated stove to reduce noise levels within the stove.

[0046] Figure 1 This is a schematic diagram of a porous noise reduction device provided in an embodiment of this application, as shown below. Figure 1 As shown, the porous noise reduction device includes a porous noise reduction plate 1. The porous noise reduction plate is wing-shaped. The porous noise reduction plate is positioned opposite to the smoke baffle of the integrated stove, and the top and bottom ends of the porous noise reduction plate 1 are respectively used to contact the upper and lower ends of the smoke baffle. The porous noise reduction plate 1 includes a porous region 11. The porous region 11 is located in the middle of the porous noise reduction plate 1, and multiple through holes 111 are distributed in the porous region 11. The multiple through holes 111 are arranged in columns along the vertical direction and rows along the horizontal direction in the porous region 111, with odd-numbered rows of through holes 111 distributed in odd-numbered columns and even-numbered rows of through holes 111 distributed in even-numbered columns.

[0047] In this embodiment, multiple through holes 111 are provided in the porous noise reduction plate 1 of the airfoil shape. The sound wave energy is consumed by the refraction, reflection, friction and energy conversion of the sound wave in the porous structure, thereby achieving a noise reduction effect. Moreover, adjusting the size and arrangement of the multiple through holes 111 can selectively reduce noise at specific frequencies.

[0048] Figure 2is a schematic view of a head part of an integrated cooker provided by an embodiment of the present application, Figure 3 is a schematic view of a cross section of a head part of an integrated cooker provided by an embodiment of the present application, as shown in Figure 2 and Figure 3 The porous noise reduction plate 1 in a wing type is installed in the smoke collecting cavity 3 in the integrated cooker, and the porous noise reduction plate 1 is arranged opposite to the smoke baffle 2 in the integrated cooker. The top end of the porous noise reduction plate 1 is arranged in contact with the upper end of the smoke baffle 2, and the bottom end of the porous noise reduction plate 1 is arranged in contact with the lower end of the smoke baffle 2. The oil fume enters the smoke collecting cavity 3 along the porous noise reduction plate 1 from the smoke inlet above the smoke baffle 2, and under the action of the fan at the bottom of the integrated cooker, the oil fume flows downward in the smoke collecting cavity 3 along the curved surface direction of the porous noise reduction plate 1. The porous noise reduction plate 1 is designed in a wing type structure, which can improve the flow guiding effect of the porous noise reduction plate 1 on the oil fume, reduce the flow resistance of the oil fume in the smoke collecting cavity 3, and thus make the oil fume flow more smoothly downward in the smoke collecting cavity 3.

[0049] Figure 4 is a schematic view of a porous noise reduction device connected with the smoke baffle 2 provided by an embodiment of the present application, as shown in Figure 4 The porous noise reduction plate 1 comprises an inlet flat plate 12, a flow guiding arc plate 13 and a porous inclined plate 14 connected in sequence.

[0050] In the embodiment of the present application, the cross section of the inlet flat plate 12 and the porous inclined plate 14 is rectangular, and the cross section of the flow guiding arc plate 13 is arc-shaped. The inlet flat plate 12 and the porous inclined plate 14 are designed as flat plates which are easy to process, which is conducive to reducing the preparation cost. The flow guiding arc plate 13 is designed as an arc plate with smooth surface, which is conducive to improving the flow guiding effect of the porous noise reduction plate 1. In principle, the inlet flat plate 12 and the porous inclined plate 14 are also designed as arc plates, which can further improve the flow guiding effect of the porous noise reduction plate 1. However, considering the balance between the preparation cost and the flow guiding effect, only the key position where the flow direction of the oil fume changes is designed as an arc plate.

[0051] In the embodiment of the present application, the inlet flat plate 12 is arranged perpendicularly to the smoke baffle 2, and the top end of the inlet flat plate 12 is at the same horizontal height as the top end of the smoke baffle 2, which facilitates the oil fume to enter the smoke collecting cavity 3 along the inlet flat plate 12 from the sample inlet above the smoke baffle 2. The bottom end of the porous inclined plate 14 is in contact with the lower end of the smoke baffle 2, and the bottom end of the porous inclined plate 14 is higher than the bottom end of the smoke baffle 2. The porous inclined plate 14 comprises a porous area 11, and the porous area 11 is used to consume sound wave energy.

[0052] In the embodiment of the present application, as shown in Figure 4As shown, the bottom end of the smoke baffle 2 has a protruding portion 21. If the fumes reaching the bottom end of the porous inclined panel 14 rush vertically towards the protruding portion 21 of the smoke baffle 2, it can easily generate more noise. To address this, a bottom transition plate 15 is connected below the porous inclined panel 14, with its bottom end abutting against the smoke baffle 2. By providing the bottom transition plate 15, the flow direction of the fumes can be changed, allowing the fumes reaching the bottom end of the porous inclined panel 14 to flow more smoothly along the bottom transition plate 15 to the protruding portion 21 of the smoke baffle 2, thereby effectively preventing the generation of more noise.

[0053] In this embodiment, a porous region 11 is provided in the porous noise reduction plate 1, and a plurality of through holes 111 are provided in the porous region 11. By adjusting the arrangement and number of the plurality of through holes 111, as well as the hole diameter and hole spacing of the plurality of through holes 111, noise of a specific frequency can be selectively reduced to achieve different noise reduction effects.

[0054] In this embodiment of the application, in order to obtain the perforated noise reduction plate 1 of the airfoil, it is necessary to first drill holes in the plate to obtain the perforated area 11, and then bend the perforated plate.

[0055] Figure 5 This is a schematic diagram of a porous noise reduction plate 1 after being flattened, according to an embodiment of this application. Figure 5 The design parameters of the porous region 11 in the porous noise reduction plate 1 are illustrated using an example. Figure 5 As shown, a rectangular coordinate system is established with the upper left corner of the flattened porous noise reduction plate 1 as the origin O, the X-axis defined horizontally, and the Y-axis defined vertically. The OD segment on the X-axis is the upper edge of the porous noise reduction plate 1, i.e., as shown... Figure 4 The top of the entrance plane plate 12 shown.

[0056] In this embodiment, the porous region 11 is located in the middle of the entire porous noise reduction plate 1 after it has been flattened. This position is beneficial for matching the airflow and achieving better noise reduction function.

[0057] In this embodiment, the length h1 of the porous region 11 is determined based on the length h of the porous noise reduction plate 1. Experiments have shown that when the ratio of the length of the porous region 11 to the length of the porous noise reduction plate 1 is 0.15-0.3, i.e., the ratio of the length h1 of segment DE to the length h of segment OA is 0.15-0.3, the noise reduction effect of the porous noise reduction plate 1 is good. Furthermore, when the ratio of h1 to h is 0.2, the noise reduction effect of the porous noise reduction plate 1 reaches its optimal level.

[0058] Optionally, the ratio of the length of the porous region 11 to the length of the porous noise reduction plate 1 is 0.15; optionally, the ratio of the length of the porous region 11 to the length of the porous noise reduction plate 1 is 0.22; optionally, the ratio of the length of the porous region 11 to the length of the porous noise reduction plate 1 is 0.3.

[0059] In the embodiments of the present application, the width of the porous region 11 is less than or equal to the width L of the porous noise reduction plate 1. Considering the noise reduction effect and cost, the width of the porous region 11 is designed to be approximately equal to the width L of the porous noise reduction plate 1.

[0060] In the embodiments of the present application, as shown in Figure 5 , the plurality of through holes 111 are arranged in columns in the vertical direction and arranged in rows in the horizontal direction in the porous region 11. Moreover, the odd-numbered rows of through holes 111 are arranged in odd-numbered columns, and the even-numbered rows of through holes 111 are arranged in even-numbered columns. If a through hole 111 is arranged at each position in each column and each row, the product strength of the entire porous noise reduction plate 1 is easily weakened, causing the through holes 111 to easily bend. Moreover, if the through holes 111 are linearly arranged in the porous region 11, the energy dissipation for irregular airflow cannot achieve a good energy complementary effect. Therefore, the present application selects the manner of arranging the through holes 111 in intervals as shown in Figure 5 .

[0061] In the embodiments of the present application, it has been verified through experiments that when the ratio of the horizontal distance X1 between adjacent two columns of through holes 111 to the vertical distance Y1 between adjacent two rows of through holes 111 is 0.60-0.74, the noise reduction effect of the porous noise reduction plate 1 is better. Moreover, when the ratio of X1 to Y1 is , the noise reduction effect of the porous noise reduction plate 1 is optimal.

[0062] Optionally, the ratio of the horizontal distance X1 between adjacent two columns of through holes 111 to the vertical distance Y1 between adjacent two rows of through holes 111 is 0.60; optionally, the ratio of the horizontal distance X1 between adjacent two columns of through holes 111 to the vertical distance Y1 between adjacent two rows of through holes 111 is 0.67; optionally, the ratio of the horizontal distance X1 between adjacent two columns of through holes 111 to the vertical distance Y1 between adjacent two rows of through holes 111 is 0.74.

[0063] In the embodiments of the present application, it has been found through multiple simulations and experiments that when the cross section of the through hole 111 is in an elongated rectangular shape, the noise reduction effect of the porous noise reduction plate 1 is better. Therefore, the through hole 111 is designed in a cuboid form, and the cross section of the through hole 111 is in a rectangular shape.

[0064] In the embodiments of the present application, through multiple experiments and simulation calculations, the greater the ratio of the length a of the through hole 111 in the horizontal direction to the length b of the through hole 111 in the vertical direction, the better the noise reduction effect of the multi-hole noise reduction plate 1. However, as the ratio of a to b increases, the processing difficulty of the through hole 111 will increase geometrically, and the cost will also increase substantially. In order to balance the noise reduction effect and the preparation cost, the through hole 111 with the ratio of the length a in the horizontal direction to the length b in the vertical direction being 5-7 is selected. Moreover, when the ratio of a to b is 6, the noise reduction effect of the multi-hole noise reduction plate 1 reaches the best.

[0065] Optionally, the ratio of the length a of the through hole 111 in the horizontal direction to the length b of the through hole 111 in the vertical direction is 5; optionally, the ratio of the length a of the through hole 111 in the horizontal direction to the length b of the through hole 111 in the vertical direction is 6; optionally, the ratio of the length a of the through hole 111 in the horizontal direction to the length b of the through hole 111 in the vertical direction is 7.

[0066] In the embodiments of the present application, as shown in Figure 5 the ratio of the length of the multi-hole region 11 to the length of the multi-hole noise reduction plate 1 is 0.2, and the multi-hole region 11 is located at the center position of the multi-hole noise reduction plate 1, that is, the length of the DE section is 0.2h, the length of the OD section is 0.4h, and the length of the EA section is 0.4h. The 50 columns of through holes 111 are arranged in an alternating and interval manner of four rows of through holes 111 and five rows of through holes 111, and the ratio of the horizontal distance X1 between the two adjacent columns of through holes 111 to the vertical distance Y1 between the two adjacent rows of through holes 111 is The ratio of the length a of the through hole 111 in the horizontal direction to the length b of the through hole 111 in the vertical direction is 6. In actual application, the number of rows and columns of the through hole 111 can be adjusted according to the aperture size and the hole spacing of the through hole 111 and the length of the multi-hole region 11.

[0067] In the embodiments of the present application, the thickness of the multi-hole noise reduction plate 1 is 0.5-1 millimeter. In order to save materials and reduce costs, the thickness of the multi-hole noise reduction plate 1 does not need to be too large, and the strength of the multi-hole noise reduction plate 1 can be guaranteed.

[0068] Optionally, the thickness of the multi-hole noise reduction plate 1 is 0.5 millimeter; optionally, the thickness of the multi-hole noise reduction plate 1 is 0.75 millimeter; optionally, the thickness of the multi-hole noise reduction plate 1 is 1 millimeter.

[0069] In the embodiments of the present application, the length of the through hole 111 in the horizontal direction is 10-14 millimeters.

[0070] Optionally, the length of the through hole 111 in the horizontal direction is 10 millimeters; optionally, the length of the through hole 111 in the horizontal direction is 12 millimeters; optionally, the length of the through hole 111 in the horizontal direction is 14 millimeters.

[0071] In the embodiment of the present application, the porous region 11 is arranged at the middle position of the porous noise reduction plate 1, and a resonance sound absorption structure based on a Helmholtz resonator can be formed at the porous region 11. When the airflow flows to the surface of the through hole 111, the air vibration in the hole (here, the internal space of each through hole 111 in the porous region 11) and the cavity (here, the space between the porous noise reduction plate 1 and the smoke baffle 2) jointly acts on the sound wave, thereby absorbing the sound wave energy. The air vibration in the hole is similar to the movement of a “piston” in the hole, and the air vibration in the cavity acts as a “spring” buffer. This joint action prevents the volume, velocity and sound pressure changes caused by the sound wave, thereby reducing the reflection and echo of the sound wave, so as to effectively reduce the noise level and achieve the noise reduction effect. The hole diameter and hole distance of the through hole in the porous region 11 can be designed to match the acoustic impedance of the airflow, so that the sound wave energy can be effectively absorbed and the noise propagation can be reduced.

[0072] In the embodiment of the present application, the pneumatic energy in the microcavity can be dissipated through the micro hole, so as to reduce the wideband noise in the integrated cooker, mainly the wideband noise with a frequency between 200 Hz and 200 Hz.

[0073] In the embodiment of the present application, a plurality of through holes 111 are arranged in the wing-shaped porous noise reduction plate 1, and the sound wave energy is consumed by using the refraction, reflection, friction and energy conversion of the sound wave in the porous structure, so as to achieve the noise reduction effect. Moreover, the size and arrangement of the plurality of through holes 111 can selectively reduce the noise of a specific frequency.

[0074] In the embodiment of the present application, the porous noise reduction plate 1 is designed in a wing shape, so as to reduce the flow resistance of the oil fume in the smoke collection cavity 3 and avoid the formation of vortex. The disturbance, movement and rupture of the vortex to the inner wall surface of the smoke collection cavity 3 will form pneumatic noise, and the porous noise reduction device avoids the noise caused by the vortex by avoiding the formation of the vortex.

[0075] In the embodiment of the present application, a plurality of through holes 111 are arranged in the porous noise reduction device, so as to effectively reduce the material cost and weight of the entire porous noise reduction device.

[0076] The embodiment of the present application also provides an integrated cooker. Figure 6 is a schematic diagram of an integrated cooker provided by the embodiment of the present application, as Figure 6 shown, the integrated cooker includes an integrated cooker head 4, an integrated cooker air inlet box 5 and an integrated cooker fan box 6 which are sequentially communicated.

[0077] In the embodiment of the present application, the integrated cooker head 4 includes a head top plate 41, a smoke inlet 42, a smoke collection cavity 3, a smoke baffle 2 and a porous noise reduction device 1 (due to the angle of view, Figure 6 the porous noise reduction device 1 is not highlighted, and can be combined with Figure 3The position of the porous noise reduction device 1 is determined. The head top plate 41 is in the shape of a rectangle as a whole, is located above the air inlet of the integrated stove head 4, and is a common air box top plate on the market. The air box 3 is in the shape of a rectangle, and the porous noise reduction device 1 is installed inside. The smoke baffle 2 is in the shape of a rectangle as a whole, is made of galvanized steel or glass, is installed on the outside of the integrated stove head 4, and is located below the smoke inlet and on the outside of the air box 3. The porous noise reduction device 1 is installed on the inside of the integrated stove head 4 by welding. The porous noise reduction device 1 and the smoke baffle 2 are oppositely arranged, the top end of the porous noise reduction device 1 is at the same horizontal plane as the top end of the smoke baffle 2, and the bottom end of the porous noise reduction device 1 is higher than the bottom end of the smoke baffle 2.

[0078] In the embodiment of the present application, the integrated stove air inlet box 5 is in the shape of a trapezoid, is installed between the integrated stove head 4 and the integrated stove fan box, and is fixedly connected with the integrated stove head 4 by screws. The integrated stove air inlet box 5 is an internal air inlet channel for oil smoke entering the fan system.

[0079] In the embodiment of the present application, the integrated stove fan box 6 includes a box body 61, a fan 62, and an air outlet cover 63. The box body 61 is in the shape of a rectangle, is made of stainless steel, and is fixedly connected with the integrated stove air inlet box 5 by screws. The box body 61 is provided with smoke exhaust openings at both ends, and the smoke exhaust openings 611 at the left end and the smoke exhaust openings 612 at the right end are both in the shape of a rectangle as a whole. The fan 62 is located in the box body 61, and is fixedly connected with the smoke exhaust openings 611 at the left end of the box body 61 by screws. The air outlet cover 63 is in the shape of a cylinder as a whole, and can be made of different kinds of fireproof materials according to actual conditions. The air outlet cover 63 is located outside the box body 61, is aligned with the smoke exhaust openings 611 at the left end of the box body 61, and is fixedly connected with the smoke exhaust openings 611 at the left end of the box body 61 by screws.

[0080] It should be noted that the above-mentioned sequence of the embodiments of the present application is only for description, and does not represent the advantages and disadvantages of the embodiments. The above describes specific embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multi-task processing and parallel processing are possible or can be advantageous.

[0081] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the device embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0082] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware or by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as a read-only memory, a disk, or an optical disk.

[0083] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A porous noise reducing device, characterized in that, The application relates to a multi-hole noise reduction plate applied to a smoke collecting cavity of an integrated cooker. The multi-hole noise reduction plate is in a wing type; the multi-hole noise reduction plate is arranged opposite to a smoke baffle of the integrated cooker, and the top end and the bottom end of the multi-hole noise reduction plate are arranged in contact with the upper end and the lower end of the smoke baffle respectively. The multi-hole noise reduction plate comprises a multi-hole region; the multi-hole region is located at the middle position of the multi-hole noise reduction plate, a plurality of through holes are distributed in the multi-hole region; the plurality of through holes are distributed in columns along the vertical direction and in rows along the horizontal direction in the multi-hole region, and the through holes in odd-numbered rows are distributed in odd-numbered columns and the through holes in even-numbered rows are distributed in even-numbered columns.

2. The porous noise reducing device of claim 1, wherein, The ratio of the length of the multi-hole region to the length of the multi-hole noise reduction plate is 0.15-0.

3. The width of the multi-hole region is less than or equal to the width of the multi-hole noise reduction plate.

3. The porous noise reducing device of claim 2, wherein, The ratio of the horizontal distance between two adjacent columns of through holes to the vertical distance between two adjacent rows of through holes is 0.6-0.

74.

4. The porous noise reducing device of claim 3, wherein, The cross section of the through hole is in a rectangular shape. The ratio of the length of the through hole in the horizontal direction to the length of the through hole in the vertical direction is 5-7.

5. The porous noise reducing device of claim 4, wherein, The thickness of the multi-hole noise reduction plate is 0.5-1 mm. The length of the through hole in the horizontal direction is 10-14 mm.

6. The porous noise reducing device of claim 1, wherein, The multi-hole noise reduction plate comprises an inlet plane plate, a flow guide arc surface plate and a multi-hole inclined surface plate which are connected in sequence. The inlet plane plate is arranged vertically to the smoke baffle; the cross section of the flow guide arc surface plate is in an arc shape; the multi-hole inclined surface plate comprises the multi-hole region, and the multi-hole inclined surface plate is arranged in contact with the inner surface of the smoke baffle.

7. The porous noise reducing device of claim 6, wherein, The multi-hole noise reduction plate further comprises a bottom transition plate. The bottom transition plate is connected to the multi-hole inclined surface plate, and the bottom transition plate is arranged in abutment to the smoke baffle.

8. An integrated hob, characterized in that The integrated cooker comprises an integrated cooker head, an integrated cooker air inlet box and an integrated cooker fan box which are connected in sequence. The integrated cooker head comprises a smoke inlet, a smoke collecting cavity, a smoke baffle and the multi-hole noise reduction device as claimed in any one of claims 1 to 7; the smoke baffle is located below the smoke inlet and at the outer side of the smoke collecting cavity, and the multi-hole noise reduction device is located in the smoke collecting cavity; The multi-hole noise reduction device and the smoke baffle are arranged opposite to each other. The integrated cooker fan box comprises a smoke outlet.

9. The integrated cooktop of claim 8, wherein, The integrated cooker fan box comprises a box body, a fan and an air outlet cover. The fan is located in the box body, the smoke outlet is arranged at each end of the box body, and the air outlet cover is aligned with the smoke outlet at one end.

10. The integrated cooktop of claim 8, wherein, The top end of the multi-hole noise reduction plate is at the same horizontal plane as the top end of the smoke baffle, and the bottom end of the multi-hole noise reduction plate is higher than the bottom end of the smoke baffle.

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